Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search


Flood defence house-tanking pilot being tested

Flood defence house-tanking pilot being tested

Christchurch City Council is this week starting a pilot test of the 'house-tanking' flood defence measure outlined in the Mayoral Flood Taskforce report recommendations for flood mitigation.

Christchurch City Mayor, Lianne Dalziel, established the Mayoral Flood Taskforce, as a result of the heavy rainfall events in March and April of this year which caused flooding, asking the Taskforce to come up with short-term flood mitigation recommendations for the most flood vulnerable areas of Christchurch.

One of the flood defence measures designed to protect the most vulnerable houses is 'house-tanking'.

The 'house-tanking' process involves the application of a waterproof membrane to the exterior of a house including but not limited to:

* Waterproof sealing of the house structure
* Installation of non-return valves to sewer pipes on the property
* Sealing pipe and cable inlets
* Flood door barriers
* Air brick/ventilation covers
* Installation of a submersible pump beneath the floor (this option may not be used in the pilot)
John Mackie, Unit Manager Transport and Greenspace says, "All flood mitigation recommendations from the Taskforce are being carefully looked at to ensure the protection for our residents who are most at risk to flooding.

"House-tanking is one of these recommendations, so a suitable red zone property was selected to pilot the technique. The house will need to be flooded similar to the conditions experienced in March and April this year, so bunding apparatus will be set up and encircle the house. This will then be filled with water, replicating above floor level flooding. This will give us a good understanding of the house-tanking performs under flood conditions.

"This pilot allows us to make any necessary changes to improve the protection measures, thereby giving assurance to residents who will have this flood defence measure put in place for their house," Mr Mackie says.

Timeline for the 'house-tanking' pilot taking place at 37 Retreat Rd, Avonside:

Thursday 10 July 2014:
* Application of a waterproof membrane to exterior of the house and foundation.
* Clear vegetation from around house for installation of bund structures.
* Installation of water-bunding systems around the house begins.
* Install the scaffolding bridge for access to the house during the pilot.

John Mackie, Unit Manager Transport and Greenspace will be on-site from 12pm-1pm to talk about the process.

Friday 11 July 2014:
* Finish bund set-up and fill with water.
* Monitor the water level and water ingress into the house through its walls and floor.

John Mackie, Unit Manager for Transport and Greenspace will again be on-site from 2.30pm-3.30pm to talk about the process.

Saturday/Sunday 12/13 July 2014:
* Monitor the water level and water ingress into the house through its walls and floor.

Monday 14 July 2014:
* John Mackie will lead a guided walk through taking a closer look at the 'house-tanking' flood defence measure and the findings from the pilot test.

John Mackie, Unit Manager for Transport will again be on-site between 1pm-2pm to talk about the process.

Health and Safety: Please note personal protective equipment (PPE) must be worn.

- Ends -

© Scoop Media

Parliament Headlines | Politics Headlines | Regional Headlines


Minister of Finance: Plan Shows $100 Billion Infrastructure Projects

Finance Minister Bill English has today launched the Government’s Ten Year Capital Intentions Plan (CIP) which shows a pipeline of $100.9 billion worth of infrastructure projects over the next decade. More>>


Werewolf: Safe Landings Gordon Campbell on the safety challenge to the Wellington runway extension.

The safety-related legal challenge revolves around the size of the 90 metre long Runway End Safety Area (RESA) being proposed for the runway extension. More>>


Environment Commissioner: We Need To Work Together On Climate Change And Farming

“The debate around agricultural emissions and the ETS has been polarised for too long,” said the Commissioner. “But the ETS is not the only way forward – there are other things that can be done.” More>>


NZ Super Fund: Seeking To Put A Market Price On Climate Change

Oct. 19 (BusinessDesk) - The New Zealand Superannuation Fund says it will devise a set of rules to assess investment winners and losers under climate change, a strategy that could rule out fossil fuels or producers such as current portfolio member Exxon ... More>>


Rejuvenation: Parata Will Not Contest 2017 Election

Education Minister and National List MP Hekia Parata has today announced that she will not be contesting the next election. She advised the Prime Minister of her decision earlier this year. More>>

Prisons Grow: Government Approves Plans For Increased Prison Capacity

Despite significant progress in reducing crime the number of prisoners has increased faster than projected. This is because the proportion of offenders charged with serious crimes has risen, meaning more people are being remanded in custody and serving more of their sentences in prison. More>>


Gordon Campbell: On Plastic Bag Activism, And Street Harassment

Amusing to see the Act Party experiencing another outbreak of young fogey-ism. What has aroused the ire of Act Leader David Seymour this time is the introduction of a Greens private members bill to the ballot process, calling for a 15 cents levy on plastic bags to reduce pollution. More>>


Unclear Weapons: US Navy Ship Cleared To Visit NZ For Navy's 75th

United States Navy ship, the USS Sampson, has been given clearance to visit New Zealand next month by Prime Minister John Key... “The process for considering the visit by the USS Sampson is the same as that used for all ships attending the International Naval Review." More>>


Get More From Scoop



Search Scoop  
Powered by Vodafone
NZ independent news